Fiona bought some oranges and 8 mangoes for a total of $30.80. For every mango Fiona bought, she could buy 4 oranges with the same amount of
money. A mango cost $2.10 more than an orange.

Select the margin of error that corresponds to the sample mean that corresponds to each population: a population mean of 25, a standard deviation of 2.5, and margin of error of 5%

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Will mark the brainliest.paula makes stained-glass windows and sells them to boutique stores. if her costs total $12,000 per year plus $4 per window for the frame. how many windows must she produce to earn a profit of at least $48,000 in one year if she sells the windows for $28 each?